| 摘要 |
<p>The apparatus comprises a revolving cage (4) provided with two plates (20,21) effective to be rotated about the central axis whereof and to receive and hold a product vessel to be processed (33), and two electric motors (13,17) effective to rotate, individually and with a different transmission ratio, the cage driving pulley (10), the operation of either one or the other motor depending on the height of the product vessel (33) with respect to a threshold height.</p> |
